diff --git a/EGkCalcPocketing.h b/EGkCalcPocketing.h
index 8335277..a05ac57 100644
--- a/EGkCalcPocketing.h
+++ b/EGkCalcPocketing.h
@@ -26,7 +26,7 @@
 
 //-----------------------------------------------------------------------------
 EGK_EXPORT bool CalcPocketing( const ISurfFlatRegion* pSfr, double dRad, double dRadOffs, double dStep, double dAngle, int nType,
-                               bool bSmooth, ISurfFlatRegion* pSfrLimit, ICRVCOMPOPOVECTOR& vCrv) ;
+                               bool bSmooth, bool bInvert, ISurfFlatRegion* pSfrLimit, ICRVCOMPOPOVECTOR& vCrv) ;
 EGK_EXPORT bool CalcZigZagInfill( const ISurfFlatRegion* pSfr, double dStep, bool bSmooth, bool bRemoveOverlapLink,
                                   ICRVCOMPOPOVECTOR& vCrvCompoRes) ;
 
@@ -34,4 +34,4 @@ EGK_EXPORT bool CalcZigZagInfill( const ISurfFlatRegion* pSfr, double dStep, boo
 enum { POCKET_ZIGZAG = 0,
        POCKET_ONEWAY = 1,
        POCKET_SPIRALIN = 2,
-       POCKET_SPIRALOUT = 3 } ;
+       POCKET_SPIRALOUT = 3} ;